Catheter having compliant balloon
AssigneeOtsuka Medical Devices Co., Ltd.
InventorsJames D. Mazzone, Eric Dailey, Ryan R. Donovan, Jaime Merino, Shruthi R. Thirumalai, III
Life of this patent
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Abstract
A catheter comprises a catheter shaft having a fluid channel, an ultrasound transducer and a compliant balloon mounted on the catheter shaft and having an interior in fluid communication with the fluid channel and containing the ultrasound transducer. The compliant balloon includes a balloon wall having a working section radially surrounding the ultrasound transducer. The working section has a predetermined straightness when the working section has a first diameter and when the working section has a second diameter that is at least 2 mm greater than the first diameter. Other embodiments are also described and claimed.
Claims10
A method, comprising:
- advancing a catheter of a tissue treatment system into the target vessel having a vessel wall, wherein the catheter includes a catheter shaft having a fluid channel, an ultrasound transducer, and a compliant balloon mounted on the catheter shaft and having an interior in fluid communication with the fluid channel and containing the ultrasound transducer, wherein the compliant balloon includes a balloon wall having a working section radially surrounding the ultrasound transducer, and wherein the working section has a predetermined straightness when the working section has a first diameter and when the working section has a second diameter that is at least 2 mm greater than the first diameter;
- inflating the compliant balloon to an inflation pressure against the vessel wall;
- and
- delivering ultrasonic energy from the ultrasound transducer to the vessel wall.
A method of treating a target tissue from a target vessel, comprising:
- measuring a size of the target vessel;
- advancing a catheter of a tissue treatment system into the target vessel having a vessel wall, wherein the catheter includes a catheter shaft having a fluid channel, an ultrasound transducer, and a compliant balloon mounted on the catheter shaft and having an interior in fluid communication with the fluid channel and containing the ultrasound transducer, and wherein the compliant balloon includes a balloon wall having a working section radially surrounding the ultrasound transducer;
- inflating the compliant balloon based upon the size of the target vessel such that a substantial portion of the working section of the balloon contacts the vessel wall and the ultrasound transducer is centered within the target vessel;
- and
- delivering ultrasonic energy from the ultrasound transducer to the target tissue based upon the size of the target vessel;
- wherein the compliant balloon is configured to have a predetermined straightness in the working section when the compliant balloon is inflated in a free space from a first diameter to a second diameter 2 mm larger than the first diameter.
Dependencies are inferred from the claim text.